Unity共享脚本Android到iOS

在Android上一切都很好，但我不知道如何在iOS上运行，请帮助。

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System.IO;
using System;
using System.Collections.Generic;
public class ShareMenu : MonoBehaviour
{   
    private bool isProcessing = false;
    public string AppLinkURL { get; set; }
    private string shareText = "Download This Game";
    private string gameLink = "Download the game on play store at " + "'nhttps://play.google.com/store/apps/details?id=com.CrazyDrivers";
    public void shareImage()
    { 
        if (!isProcessing)
            StartCoroutine(ShareScreenshot());
    }
    private IEnumerator ShareScreenshot()
    {
        isProcessing = true;
        yield return new WaitForEndOfFrame();
        string destination = Path.Combine(Application.persistentDataPath, System.DateTime.Now.ToString("yyyy-MM-dd-HHmmss") + ".png");
        Debug.Log(destination);
        if (!Application.isEditor)
        {
            AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
            AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
            intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));
            AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");
            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), shareText + gameLink);
            intentObject.Call<AndroidJavaObject>("setType", "text/plain");
            AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
            currentActivity.Call("startActivity", intentObject);
            isProcessing = false;
        }
    }  
}

你能帮我修改一下ios的代码吗让我分享到脸书，推特，whatsapp。因为在android上它运行得很好。我是编程新手。

#if !UNITY_EDITOR && UNITY_ANDROID
                AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
                AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
                intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));
                AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");
                intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), shareText + gameLink);
                intentObject.Call<AndroidJavaObject>("setType", "text/plain");
                AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
                AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
                currentActivity.Call("startActivity", intentObject);
                isProcessing = false;
#elif UNITY_IOS
                //put iOS share code here
#endif